I have seen my pet parakeet's death in a dream. When I woke up and went downstairs to check on him, my dream played out right there. It was extreeeemely freaky.
My parents also said I talked about seeing my great grandma die in a dream, and that on the day after she was taken away (she die in her sleep one night) I was very creepily insisting I knew it would happen, but I was too young to really remember now.
I haven't seen the future (as least anything that has come to pass) in my dreams in a long time, so I think those were just very strange, out of the blue happenings